Yanmar YM155d Service Manual page 90

(2) Visual Inspection and the final reduction gear housing.
(1) Check t o see that there are no traces o f
(3) Check the gears f o r uneven wear, chipped
oil leakage or cracks in the transmission hous-
teeth or cracks.
ing.
(3) Inspecting
by
Testing Equipment
(2) Check t o see that there are no traces o f
oil leakage or cracks i n the rear axle housing
Refer t o the instructions and detailed drawings
i n Section 2, Chapter X I f o r details o n assembling
the transmission.
[Servicing Standard f o r Transmission Section;
[Unit: inch (mm1l
No.
Outer diameter of maln change
shaft
Inner diameter of main shaft
I
1
Before the Serial No.51000
I
0.006 (0.151
1. ([~eedle bearing in main shaft1
I
Item
1
Clearance
2. [Reverse gear1
Outer diameter of metal
1
0.9826-0.9835 i251#%$
0.5902-0.5906 (15_gol1)
After the Serial No.51001
0.8270-0.8276 ( 2 1 2 : : ; : )
Micrometer
Standard specification
Micrometer
Cytinder gauge
0.8257-0.8265 (21100:gi)
1
Before the Ser~al ~0.51000
I
After the Serial No.51001
Replacement limit
0.006 (0.1 51
Inner diameter of reverse gear 0.9843-0.9851 (25+Eo21)
3.
1
[Lowhi reduction gear341
Micrometer
Testing equipment
Cylinder gauge
0
Outer diameter of countershaft
/
0.7869-0.7874 (20-0,013)
I I
lnner diameter of low-hi
M.021)
reduction gear
1
0.9843-0.9851 125
1
Clearance
/
0.0008-0.0025 (0.020-0.062)
1
0.01 18 (0.3)
Micrometer
Cylinder gauge
I
I I I
1 1
Clearance
/
0.0003-0.0016 (0.007-0.041)
1
0.008 (0.2)
lnner diameter of metal
M.041
/
0.7882-0.7890 (20+0.020)
Cylinder gauge
,--.
Inner diameter of bushing 0.3939-0.3945
( l o $: $ ; : )
Cylinder gauge
,
0.0001 -0.001 0 (0.003-0.025)
0.01 18 (0.3)
Outer diameter of connecting
shaft
I
0.3920-0.3924
, l o $: : $ : )
-
Micrometer